Kitchen exhaust pipeline

Abstract

The utility model discloses a kitchen exhaust duct, and relates to the technical field of exhaust ducts. The flue gas purifier comprises an air inlet pipe, an air exhaust pipe and a filtering assembly used for filtering flue gas, a first installation disc and a second installation disc are arranged at the ends, used for installing the filtering assembly, of the air inlet pipe and the air exhaust pipe respectively, and a first elastic sealing assembly is arranged at the end of the first installation disc. According to the utility model, the first mounting disc and the second mounting disc are connected through the connecting assembly, and the filtering assembly is fixed under the action of elastic force generated after the first elastic sealing assembly and the second elastic sealing assembly are compressed; flue gas flowing in an air inlet pipe and an air exhaust pipe is filtered and adsorbed through a filtering assembly, axial pressure is applied to a first mounting disc, then a connecting assembly is unfolded, and then the filtering assembly between a first elastic sealing assembly and a second elastic sealing assembly is disassembled; and the filtering assembly can be conveniently disassembled and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust ducts, and particularly relates to a kitchen exhaust duct. Background Art

[0002] A kitchen exhaust duct refers to an exhaust duct used in a kitchen ventilation system, whose function is to remove oil fumes, hot air and peculiar smells generated in the kitchen, ensure fresh air in the kitchen, and prevent oil fumes from adhering to the kitchen walls and ceiling at the same time.

[0003] Chinese Patent No. CN213686962U discloses an exhaust duct for kitchen oil fumes, which includes an air inlet pipe, an air outlet pipe, a connecting pipe and an air outlet hood. An L-shaped air outlet pipe is arranged on one side of the air inlet pipe, a connecting pipe matching with the connecting pipe is arranged above the air outlet pipe, and a rectangular air outlet hood is communicated at the top end of the connecting pipe;

[0004] For the above-mentioned disclosed technology, in the prior art, the filter ring is installed by fixing a plurality of locking bolts with nuts on two fixing rings. When used for a long time, especially when the oil stain in the kitchen is heavy, the bolts are easy to be rusted. The rusted bolts are inconvenient to operate during disassembly, and thus it is not convenient to replace the filter ring.

[0005] Therefore, a kitchen exhaust duct is proposed. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a kitchen exhaust duct to solve the problems raised in the above background art.

[0007] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0008] A kitchen exhaust duct includes an air inlet pipe, an exhaust pipe and a filter assembly for filtering flue gas. First mounting plates and second mounting plates are respectively arranged at the ends of the air inlet pipe and the exhaust pipe for installing the filter assembly. A first elastic sealing assembly is arranged at the end of the first mounting plate, a second elastic sealing assembly is arranged at the end of the second mounting plate, and a connecting assembly is arranged on the surfaces of the first mounting plate and the second mounting plate.

[0009] Further, the first elastic sealing assembly includes a first bellows. The first bellows is fixedly installed at the end of the first mounting plate, and a first sealing ring is fixedly installed at the end of the first bellows. A first spring is fixedly installed on the opposite surfaces of the first mounting plate and the first sealing ring, and positioning concave holes are formed on the surface of the first sealing ring.

[0010] Further, the second elastic sealing assembly includes a second corrugated pipe. The end of the second mounting plate is fixedly installed with the second corrugated pipe, and the end of the second corrugated pipe is fixedly installed with a second sealing ring. A second spring is fixedly installed on the opposite surfaces of the first mounting plate and the second sealing ring. A positioning convex shaft is arranged on the surface of the second sealing ring.

[0011] Further, the filtering assembly includes an annular frame. The inner wall of the annular frame is fixed with two filter meshes, and an activated carbon filter plate is arranged between the two filter meshes. One end of the annular frame is provided with a mounting convex shaft, and the other end is provided with a mounting concave hole. When installing the annular frame, the mounting convex shaft is inserted into the positioning concave hole, and the positioning convex shaft is inserted into the interior of the mounting concave hole.

[0012] Further, the connecting assembly includes a U-shaped seat. The U-shaped seat is fixedly installed on the surface of the first mounting plate. A T-shaped mounting rod is rotatably installed inside the U-shaped seat. A U-shaped clamp is fixedly installed on the surface of the second mounting plate.

[0013] Further, when installing the filtering assembly, the T-shaped mounting rod is snap-fitted inside the U-shaped clamp, and the first elastic sealing assembly and the second elastic sealing assembly are in a compressed state.

[0014] The beneficial effects of the present utility model are as follows:

[0015] Align the two ends of the filtering assembly with the end faces of the first elastic sealing assembly and the second elastic sealing assembly respectively. Apply an axial pressure to the first mounting plate to compress the first elastic sealing assembly and the second elastic sealing assembly. Then, snap-lock the connecting assembly. The connecting assembly enters to connect between the first mounting plate and the second mounting plate. Under the elastic force of the compressed first elastic sealing assembly and second elastic sealing assembly, the filtering assembly is fixed. Through the filtering assembly, the flue gas flowing in the air inlet pipe and the exhaust pipe is filtered and adsorbed. Apply an axial pressure to the first mounting plate, and then unfold the connecting assembly, so as to disassemble the filtering assembly between the first elastic sealing assembly and the second elastic sealing assembly, which can facilitate the disassembly and replacement of the filtering assembly. Description of the Drawings

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a front sectional view of the present utility model;

[0018] Figure 3 is a partial exploded view of the present utility model;

[0019] Figure 4It is another partial explosion diagram of the present utility model;

[0020] Figure 5 It is an explosion diagram of the filter assembly of the present utility model;

[0021] Reference numerals: 1, air inlet pipe; 11, first mounting plate; 2, exhaust pipe; 21, second mounting plate; 3, first elastic sealing assembly; 301, first corrugated pipe; 302, first sealing ring; 303, positioning concave hole; 304, first spring; 4, second elastic sealing assembly; 401, second corrugated pipe; 402, second sealing ring; 403, positioning convex shaft; 404, second spring; 5, filter assembly; 501, annular frame; 502, filter net; 503, activated carbon filter plate; 504, mounting convex shaft; 505, mounting concave hole; 6, connection assembly; 601, U-shaped seat; 602, T-shaped mounting rod; 603, U-shaped clip. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present utility model is normally placed. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0026] As shown Figures 1 to 4 in the figure, a kitchen exhaust duct includes an air inlet duct 1, an air outlet duct 2, and a filter assembly 5 for filtering flue gas. The ends of the air inlet duct 1 and the air outlet duct 2 for installing the filter assembly 5 are respectively provided with a first mounting plate 11 and a second mounting plate 21. A first elastic sealing assembly 3 is provided at the end of the first mounting plate 11, and a second elastic sealing assembly 4 is provided at the end of the second mounting plate 21. A connecting assembly 6 is provided on the surfaces of the first mounting plate 11 and the second mounting plate 21. More specifically, when installing the filter assembly 5, the two ends of the filter assembly 5 are respectively corresponded to the end faces of the first elastic sealing assembly 3 and the second elastic sealing assembly 4. By applying an axial pressure to the first mounting plate 11, the first elastic sealing assembly 3 and the second elastic sealing assembly 4 are compressed. Then the connecting assembly 6 is snap-locked. By the entry of the connecting assembly 6, the connection between the first mounting plate 11 and the second mounting plate 21 is achieved. Under the elastic force of the first elastic sealing assembly 3 and the second elastic sealing assembly 4 after being compressed, the filter assembly 5 is fixed. Through the filter assembly 5, the flue gas flowing in the air inlet duct 1 and the air outlet duct 2 is filtered and adsorbed. When disassembling the filter assembly 5, by applying an axial pressure to the first mounting plate 11 and then unfolding the connecting assembly 6, the filter assembly 5 between the first elastic sealing assembly 3 and the second elastic sealing assembly 4 can be disassembled, which is convenient for disassembling and replacing the filter assembly 5.

[0027] The first elastic sealing assembly 3 includes a first bellows 301. The first bellows 301 is fixedly installed at the end of the first mounting plate 11, and a first sealing ring 302 is fixedly installed at the end of the first bellows 301. A first spring 304 is fixedly installed on the opposite surfaces of the first mounting plate 11 and the first sealing ring 302. A positioning concave hole 303 is formed on the surface of the first sealing ring 302. More specifically, during installation, the first bellows 301 and the first spring 304 are compressed. Under the elastic force of the first spring 304, the end face of the first sealing ring 302 is in close contact with one end of the filter assembly 5, thereby realizing the sealing of the contact end between the first sealing ring 302 and the filter assembly 5.

[0028] The second elastic sealing assembly 4 includes a second bellows 401. The end of the second mounting plate 21 is fixedly installed with the second bellows 401, and the end of the second bellows 401 is fixedly installed with a second sealing ring 402. A second spring 404 is fixedly installed on the opposite surfaces of the first mounting plate 11 and the second sealing ring 402. A positioning convex shaft 403 is arranged on the surface of the second sealing ring 402. More specifically, during installation, the second bellows 401 and the second spring 404 are compressed. Under the elastic force of the second spring 404, the end face of the second sealing ring 402 is in close contact with the other end of the filter assembly 5, thereby realizing the sealing of the contact end between the second sealing ring 402 and the filter assembly 5. Through the first sealing ring 302 and the second sealing ring 402, the filter assembly 5 is clamped and fixed, thus realizing the installation and fixation of the filter assembly 5.

[0029] The filter assembly 5 includes an annular frame 501. The inner wall of the annular frame 501 is fixed with two groups of filter meshes 502. An activated carbon filter plate 503 is arranged between the two groups of filter meshes 502. One end of the annular frame 501 is provided with a mounting convex shaft 504, and the other end is provided with a mounting concave hole 505. When installing the annular frame 501, the mounting convex shaft 504 is inserted into the positioning concave hole 303, and the positioning convex shaft 403 is inserted into the interior of the mounting concave hole 505. More specifically, during installation, the mounting convex shaft 504 at one end of the annular frame 501 is inserted into the positioning concave hole 303, and the mounting concave hole 505 at the other end is inserted into the positioning convex shaft 403, thereby facilitating the positioning installation during the installation of the annular frame 501. The flue gas is filtered and adsorbed through the filter meshes 502 and the activated carbon filter plate 503 inside the annular frame 501.

[0030] The connecting assembly 6 includes a U-shaped seat 601. The U-shaped seat 601 is fixedly installed on the surface of the first mounting plate 11. A T-shaped mounting rod 602 is rotatably installed inside the U-shaped seat 601. A U-shaped clamp 603 is fixedly installed on the surface of the second mounting plate 21. More specifically, after the filter assembly 5 and the first and second elastic sealing assemblies 3 and 4 are in end-to-end contact, an axial pressure is applied to the first mounting plate 11 to compress the first and second elastic sealing assemblies 3 and 4. Then, the T-shaped mounting rod 602 is flipped so that the T-shaped mounting rod 602 is snapped into the interior of the U-shaped clamp 603. Under the elastic force of the first and second elastic sealing assemblies 3 and 4, the end of the T-shaped mounting rod 602 is in close contact with the end of the U-shaped clamp 603, and the U-shaped clamp 603 bears the axial force, realizing the connection between the first mounting plate 11 and the second mounting plate 21.

[0031] When the filtering component 5 is installed, the inside of the T-shaped mounting rod 602 and the U-shaped clamp 603 are snap-fitted, and the first elastic sealing component 3 and the second elastic sealing component 4 are in a compressed state. More specifically, the T-shaped mounting rod 602 and the U-shaped clamp 603 are snap-fitted through the compressed state of the first elastic sealing component 3 and the second elastic sealing component 4, so as to realize the fixed connection between the first mounting plate 11 and the second mounting plate 21.

[0032] In summary: When the filtering component 5 is installed, the two ends of the filtering component 5 are respectively corresponding to the end face of the first elastic sealing component 3 and the end face of the second elastic sealing component 4. By applying an axial pressure to the first mounting plate 11, the first elastic sealing component 3 and the second elastic sealing component 4 are compressed. Then the connecting component 6 is snap-locked. By the entry of the connecting component 6, the connection between the first mounting plate 11 and the second mounting plate 21 is realized. Under the action of the elastic force after the first elastic sealing component 3 and the second elastic sealing component 4 are compressed, the filtering component 5 is fixed. Through the filtering component 5, the flue gas flowing in the air inlet pipe 1 and the exhaust pipe 2 is filtered and adsorbed. When the filtering component 5 is disassembled, by applying an axial pressure to the first mounting plate 11 and then unfolding the connecting component 6, the filtering component 5 between the first elastic sealing component 3 and the second elastic sealing component 4 can be disassembled, which is convenient for disassembling and replacing the filtering component 5.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A kitchen exhaust duct, characterized in that: The invention comprises an air inlet pipe (1), an air exhaust pipe (2) and a filter assembly (5) for filtering smoke, wherein the ends of the air inlet pipe (1) and the air exhaust pipe (2) for mounting the filter assembly (5) are respectively provided with a first mounting plate (11) and a second mounting plate (21), the end of the first mounting plate (11) is provided with a first elastic sealing assembly (3), the end of the second mounting plate (21) is provided with a second elastic sealing assembly (4), and the surfaces of the first mounting plate (11) and the second mounting plate (21) are provided with a connecting assembly (6).

2. A kitchen exhaust duct according to claim 1, characterized in that: The first elastic sealing component (3) comprises a first bellows (301), the first bellows (301) is fixedly mounted on the end of the first mounting plate (11), and a first sealing ring (302) is fixedly mounted on the end of the first bellows (301), a first spring (304) is fixedly mounted on the opposing surfaces of the first mounting plate (11) and the first sealing ring (302), and a positioning recessed hole (303) is provided on the surface of the first sealing ring (302).

3. A kitchen exhaust duct according to claim 2, characterized in that: The second elastic sealing assembly (4) comprises a second bellows (401), the second bellows (401) is fixedly mounted on the end of the second mounting plate (21), and a second sealing ring (402) is fixedly mounted on the end of the second bellows (401), a second spring (404) is fixedly mounted on the opposite surfaces of the first mounting plate (11) and the second sealing ring (402), and a positioning cam (403) is provided on the surface of the second sealing ring (402).

4. A kitchen exhaust duct according to claim 3, characterized in that: The filter assembly (5) comprises an annular frame (501), the inner wall of which is fixed with two groups of filter screens (502), an activated carbon filter plate (503) being arranged between the two groups of filter screens (502), a mounting convex shaft (504) being arranged at one end of the annular frame (501), and a mounting recessed hole (505) being arranged at the other end thereof, and when the annular frame (501) is installed, the mounting convex shaft (504) and the positioning recessed hole (303) are plugged in, and the positioning convex shaft (403) and the inside of the mounting recessed hole (505) are plugged in.

5. The kitchen exhaust duct according to claim 1, characterized in that: The connection assembly (6) comprises a U-shaped seat (601), the surface of the first mounting plate (11) is fixedly mounted with the U-shaped seat (601), a T-shaped mounting rod (602) is rotatably mounted inside the U-shaped seat (601), and the surface of the second mounting plate (21) is fixedly mounted with a U-shaped clip (603).

6. A kitchen exhaust duct according to claim 5, characterized in that: When the filter assembly (5) is installed, the T-shaped installation rod (602) and the interior of the U-shaped clamp (603) are clamped and installed, and the first elastic sealing assembly (3) and the second elastic sealing assembly (4) are in a compressed state.

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